title: Synthesis and antioxidant potential of novel synthetic benzophenone analogues.
abstract: Considering that oxidative stress is strongly implicated in the toxicity of chemotherapy, much effort is focused on the research of diverse antioxidants as protective agents. An efficient synthesis of three novel benzophenones containing 1,3-thiazol moiety (6a-c) is described. Their antioxidant power was evaluated in vitro and in three cell lines (the cancerous MCF7 and the non-cancerous hTERT-HME1 mammary cells, and the H9c2 cardiomyoblastic cells). One analogue 5-(2,5-dihydroxybenzoyl)-2(3H)-benzothiazolone (6c), displayed an important antioxidant activity, a low cytotoxicity, and could decrease reactive oxygen species production generated by tert-butyl hydroperoxide (tBHP) in all three cell lines. Interestingly, 6c was able to protect the non-cancerous cells against tBHP-induced death. Further studies are underway to determine its relevance as an adjuvant in oxidative stress inducing chemotherapy.
authors.affiliation: Medical University of Sofia, Faculty of Pharmacy, Department of Pharmacology and Toxicology, 2 Dunav Street, Sofia 1000, Bulgaria.
authors.forename: Tzvetomira
authors.initials: T
authors.lastname: Tzanova
authors.forename: Mariana
authors.initials: M
authors.lastname: Gerova
authors.forename: Ognyan
authors.initials: O
authors.lastname: Petrov
authors.forename: Margarita
authors.initials: M
authors.lastname: Karaivanova
authors.forename: Denyse
authors.initials: D
authors.lastname: Bagrel
mesh_terms: D000975:Antioxidants / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D001577:Benzophenones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D016923:Cell Death / Q000187:drug effects; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D015195:Drug Design; D004353:Drug Evaluation, Preclinical; D006801:Humans; D015394:Molecular Structure; D018384:Oxidative Stress / Q000187:drug effects; D017382:Reactive Oxygen Species / Q000378:metabolism; D013237:Stereoisomerism
chemical_list: D000975:Antioxidants; D001577:Benzophenones; D017382:Reactive Oxygen Species; C047723:benzophenone